Elastic constants of 3-, 4- and 6-connected chiral and anti-chiral honeycombs subject to uniaxial in-plane loading

Alderson, Andrew, Alderson, K. L., Attard, D., Evans, K. E., Gatt, R., Grima, J. N., Miller, W., Ravirala, N., Smith, C. W. and Zied, K. (2010) Elastic constants of 3-, 4- and 6-connected chiral and anti-chiral honeycombs subject to uniaxial in-plane loading. Composites Science and Technology, 70 (7). pp. 1042-1048. ISSN 0266-3538

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Abstract

Finite Element models are developed for the in-plane linear elastic constants of a family of honeycombs comprising arrays of cylinders connected by ligaments. Honeycombs having cylinders with 3, 4 and 6 ligaments attached to them are considered, with two possible configurations explored for each of the 3- (trichiral and anti-trichiral) and 4- (tetrachiral and anti-tetrachiral) connected systems. Honeycombs for each configuration have been manufactured using rapid prototyping and subsequently characterised for mechanical properties through in-plane uniaxial loading to verify the models. An interesting consequence of the family of 'chiral' honeycombs presented here is the ability to produce negative Poisson's ratio (auxetic) response. The deformation mechanisms responsible for auxetic functionality in such honeycombs are discussed.

Item Type: Article
Additional Information: The definitive version of this article was published in Composites Science and Technology, published by Elsevier - Copyright 2009 Elsevier Ltd All rights reserved.
Uncontrolled Keywords: Smart materials,Mechanical properties,Deformation,Elastic properties,Finite element analysis (FEA)
Divisions: University of Bolton Research Centres > Institute for Materials Research and Innovation
University of Bolton Research Centres > Institute for Materials Research and Innovation
Depositing User: Scott Wilson
Date Deposited: 26 Nov 2013 12:52
Last Modified: 11 Dec 2013 12:16
Identification Number: 10.1016/j.compscitech.2009.07.009
URI: http://ubir.bolton.ac.uk/id/eprint/55

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